NoMachine NX is a fast terminal server and desktop
virtualization system based on the X11 protocol.
NX is an order of magnitude faster than VNC or X11
and can run on bandwidth as narrow as 10 kBit/sec.
In addition, NX translates and embeds the MS
Windows Terminal Server and VNC protocols into
X/NX, enabling users to compress and accelerate
remote Windows and VNC sessions. The NX project
provides a suite of libraries and X11 proxying
agents implementing efficient compression and
optimized transport of X11, SMB, IPP, HTTP, and
arbitrary protocols like audio and video over the
Internet.

Linux Bandwidth Arbitrator allows beginning-to-advanced network administrators to control bandwidth. It is designed to be completely turn-key in its default configuration. You just plug it into your network trunk, and it self configures and immediately starts slowing "bandwidth hogs". It can be configured to target specific applications such as Kazaa, IMAP, and POP. It is compatible with the 2.4.25 kernel, ebtables, and brouter (bridging router). It also comes with denial of service protection.

Frink is a calculating tool and programming language designed to help you in the real world. It tracks units of measurement throughout all
calculations and ensures that answers are correct. It converts between systems of measurement, and has a huge library of physical
data. It is both a simple calculator for quick calculations and a full-fledged programming language for large tasks. It draws high-quality graphics, handles conversions between time zones, currencies, and historical values of the U.S. dollar and the British pound, translates between several languages, does date/time math, and more.